torque spec for 1995 L82 rocker arm nut

[GoremanX]

I have a 1995 Oldsmobile Cutlass Supreme with the L82 V6. I recently had to change the head gaskets, and have been working from a 1999 factory service manual for reference. Now I'm re-assembling the top end, and I've got all the pushrods and rockers in place. But the 1995 rocker arms are different from the 1999 ones. These rocker arms use a ball pivot, not a roller pivot. What's the proper procedure for tightening these down? I checked the "specifications" page on this site, but it states the following:

Rocker Arm Bolt: 89 lb-in +30°

First off, it's a nut I'm trying to tighten, not a bolt. Second, doesn't valve spring pressure get in the way of the torque readings? Do I need to rotate the engine so each valve is seated before torquing? Or do I need to compress the springs before I tighten? 89 lb-in is barely 7.5 lb-ft, that doesn't seem like much to seat the rockers properly.

Thanks,

[geoffinbc]

There is no adjustment. There is a shoulder on the stud that the rocker ball stops on. Tighten the nut to 20lbs. Use the same specs from the 3.1L aluminum head engine since they are the same rocker stud.

[IsaacHayes]

^^ that should do it. I forget what the chiltons said but it was just straight torque no extra rotation and I've followed that way for several times when I've had it apart.

[GoremanX]

Thanks! That did the trick.

Lucky for me, I had the forethought to try turning the engine by hand to make sure I did everything right. But the engine seized up after half a turn! Turns out I had switched two pushrods, and the piston was hitting an intake valve!!! Good thing I didn't try starting the engine like that...

This is the first time I ever see an engine with different length pushrods for the intake and exhaust.

[IsaacHayes]

Consider yourself lucky/smart you caught that! Yeah the exhaust is longer.